Re: [RFC][PATCH 6/8] mm: handle_speculative_fault()

[Christoph Lameter]

On Fri, 8 Jan 2010, Linus Torvalds wrote:

> We worried about the effects of fair spinlocks when introducing the ticket
> locks, but nobody ever actually had a load that seemed to indicate it made
> much of a difference, and we did have a few cases where starvation was a
> very noticeable problem.

And I made the point that starvation was a hardware issue due to immature
cacheline handling. Now the software patchup job for the hardware breakage
is causing regressions for everyone.


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